Metal cutting machine



- April 8, 1952 r ANDERSON 2,591,765

METAL; CUTTING MAdI-IINE Filed. Dec. 20, 1946 5 Sheets-Sheet lifizvczzztaz Jflnciem 0 2/ 1 wjzi J. ANDERSON METAL CUTTING MACHINEApril 8, 1952 5 Sheets-Sheet 2 Filed Dec. 20, 1946 April 8, 1952 J.ANDERSON METAL CUTTING MACHINE 5 Shee ts-Sheet 3 Filed Dec. 20, 1946 v KQ T b 1 R E a) Lav 6177301 Q7 ciel aolz/ April 8, 1952 J. ANDERSONMETAL. CUTTING MACHINE Filed Dec. 20, 1946 2 uHH Q\ April 8, 1952 J.ANDERSON 2,591,765

METAL CUTTING MACHINE Filed Dec. 20, 1946 5 Sheets-Sheet 5 of one of thesupporting In the drawings a is ibearing brackets Patented Apr. 8, 1952METAL CUTTING MACHINE James Anderson, Newton Mearns, ScotlandApplication December 20, 1946, Serial No. 717,467

In Great Britain February 1, 1946 2 Claims.

This invention has reference to metal cutting machines and particularlyto facing, boring, turning and like machines.

The invention has for its object to provide a metal cutting machinewhereby the usual heavy casting with overhanging tool supporting meansis avoided and which will permit the tool or tools to be fed to the workto be operated on without any obstruction and irrespective of thedirection of feed.

' Another object of the invention is to provide i proved means wherebythe adjustment'of the tool or tools relative to the work can be easilyand accurately made.

A preferred embodiment of the invention will 'now be described withreference to the annexed drawings wherein:

Figure 1 is a metal cutting machine having two slides carrying cuttingtools, slide brackets and supporting means therefor all in accordancewith the invention.

Figure 2 is a plan view of Figure 1 and Figure 3 is an end view thereoflooking to the right.

Figure 4 is an elevation to a larger scale of one of the carryingslides, slide bracket and supporting means therefor.

Figure 5 is a view corresponding to Figure 4 but showing the toolcarrying slide and slide bracket in section.

Figure 6 is an elevation of the tool carrying slide and slide bracket,occupying the vertical position.

Figure '7 is a view corresponding to Figure 6 but showing the toolcarrying slide and slide bracket in section. I

Figure 8- is an end elevation of Figure 6, and Figure 9 is an endelevation partly in section brackets remote from the main supportingbrackets.

the machine table, a a casing on which the table is mounted and whichcontains the motor, and a is a casing housing the controls of themachine.

5 .Supported on the machine table are two main each circumferentiallyadjustable with respect to its corresponding main bracket, and twotransversely extending supporting members d, d each carried by a mainsupporting bracket 1) and a circumferentially adjustably supportingbracket 0.

As shown in Figures 4 and 5 each main bracket is in the form of a sleeve12 adjustable on a pedestal b and at its upper end provided with a screwthreaded spindle b which passes freely b, 1), two further brackets c,c,-

k see Figure 5, carried ,the hand screw 1 2 through a lug b carried bythe casing a Hand wheels b screwed on each of the said spindles andbearing on the lugs are provided to adjust the sleeves vertically.

Each sleeve carries a right angled extension I) through which extends aspindle e forming one end of a transverse supporting member d. One endof each of said spindles is screw threaded to receive a nut e while theother end carriesa'n eccentric e provided with tommy holes 6 On eacheccentric is mounted a slide bracket I having a circular recess toaccommodate snugly the eccentric e and carrying an hydraulic feed in theform of a hydraulic cylinder 9 and ram 0 The transverse supportingmembers 11 extend in the form of spindles from the eccentrics e theiraxis being co-eccentric with those of their respective eccentrics.

Each slide bracket carries a tool carrrying slide it in the form of arectangular frame provided with a central longitudinally extending sloti, see Figure 8, and recessed round three sides thereof to receive thetools 7', 7' and 7' the tools being secured in position by screw bolts iThe fourth side of each tool carrying slide is connected to the ram 9 ofthe corresponding slide bracket. The tool carrying slides havelongitudinally extending dovetail recesses in which fit angled guideribs 7' formed integral with the slide brackets, the tool carryingslides being thus mounted so that they can partake of a longitudinalsliding feed motion with respect to the sup- ,porting brackets.

The ends of the transverse supports 11 remote from the main bearings areeach carried by a second eccentric is rotatably mounted on a pin by acollar 1 vertically adjustable on a rod m to which it is clamped by Thecentre lines of the pins are co-axial with the centres of the spindlese.

Said rods m are supported between vertically aligned pins n, see Figure9, the centres of which are eccentric to the vertical centre line of therods. The said pins n are carried by the supporting brackets c which arecircumferentially adjustable on the table with the axis of the mainbearings as centres, the said brackets having downwardly extending screwthreaded pins 0 ad- I slots 0 in the table 0/. Nuts- 0 threaded on saidpins 0 clamp the brackets c in their circumferentially adjusted.

position.

Each of said rods m is provided with a knurled head 1) to enable it tobe rotated about its vertical axis and clamping hand screws p screwedinto 'other.

the heads of the supporting brackets c are provided to clamp the rods intheir adjusted position.

The supporting members d are locked against rotation about the centrelines of the spindles e and pins k by means of the nuts e and. the toolcarrying slides are secured in their adjusted position by means of nutsq screwed on screw threaded portions of said supports and bearing on theenlarged heads 1- of sleeves s the other ends of which bear on the ribsof the supporting brack ets 'l he work to be operated upon, designatedby the letter t, is carried by a chuck t driven by the motor. The work,may, however, be carried between centres.

In operation each tool carrying slide, together with its slide bracketis rotated to bring into operation the appropriate tools. In Figure 8the tools i and 7' are shown simultaneously cutting the work, and itwill be understood that any selected mm or tools carried by the othertool carrying slide may likewise be brought into operation. Suchadjustment can be affected by first slackening off the nuts 1' which aretightened up after adjustment has been efiected.

The tool carrying slide in the position shown in full lines in Figure 8is effecting a vertically downwards feed, and in the position indicatedin chain dotted lines is effecting a horizontal feed.

It will be understood that the adjustment can be efiected so that thetool or tools in operation can be adjusted to cut at any desired angle.

The position of the operating tool or tools relative to the work can beadjusted vertically by operating the hand wheels b the collars I beingpermitted to move vertically on the rods m by loosening the hand screwsZ The tools can be adjusted relative to the work by easing oif the nuts6 and the supports (1 rotated about the axis of the spindle e and pins kwhich can be done by inserting a tommy bar in the tominy holes e Furtheradjustment can be eiTected by easing oi? the nuts 0- and moving thebearing brackets c in the circumferential slots-o the supports beingthus rotated in a horizontal plane with the axis of the pedestals b ascentres. The nuts 0 are thereafter 'tightened'up.

A finer adjustment can be obtained by easing off the hand screws 11 androtating the rodsm by means of the knurled heads p. Due to theeccentricity of their vertical bearings this imparts a finecircumferential movement to the supporting members 01, thus enabling afine ad- -Justm'ent of the tool relative to the work to be effected.

. It is preferable that the slide brackets and tool carrying slidesshould be capable of an axial adjustr'nent relative to the work. This,in the machine illustrated, is efi'ected by forming the pedestals beccentric with reference to pillars it which are supported in verticalbushes o fixed to the table of the machine, the said pedestals and theirpillars being formed integral with each The pillars are provided withtommy holesw. I

To eifect axial adjustmentsetscrews xsec'uring the sleeves to theirpedestals are slackened off and the pillars rotated by means of a tommybar. This has the efiect of moving axially relative to the work thesupporting members d, together with the slide brackets and tool carryingslides, the eccentric is moving axially on the pins 70 When the desiredadjustment is efiected the set screws are tightened up.

The machine may be provided with one or more tool carrying slides, slidebrackets and supporting members, all as above set forth, so that one ormore cutting operations can be simultaneously performed on the work.Further the supporting members d, in lieu of extending horizontally asillustrated may extend vertically or at any desired angle relative tothe horizontal.

It will be understood that by substituting motor driven grinding wheelsfor the cutting tools, the improved machine may be used for grinding.Also it will be understood that the cutting tools may be in the form ofdrilling or boring tools.

I claim:

1. A machine for boring, turning and like operations comprising meansfor holding the work to be operated on, a machine bed, two end supportsmounted on the machine bed, a tool supporting member adjustablysupported at its ends by the two end supports, a disc rigid on the toolsupporting member and positioned between the two end supports, a slidebracket mounted on said disc, a tool carrying slide mounted on thebracket and having a slot through which passes the tool carrying member,said member, where it extends through the slot being concentric with theaxis of the disc, and eccentric with reference to the axes of the endscarried by the end supports so that rotatable adjustment of the toolcarrying member adjusts the position of the tools with respect to thetool holder.

2. A machine for facing, boring, turning and like operations comprisingmeans for holding the work to be operated on, a machine bed, two endsupports mounted on the machine bed, a tool supporting member extendingbetween and rotatably supported at its ends by said supports, thelongitudinal axis of the supporting member being eccentric with respectto the axis of the ends so supported, a slide bracket rotatably mountedon said supporting member, a tool carrying slide carried by saidbracket, which slide has a slot through which extends the supportingmember and is adapted to carry tools on at least two sides thereof andfeed means carried by the bracket and by which the tool carrying slidecan be fed towards the work to be operated on.

JAMES ANDERSON.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS

